Attached is a v7 which address a test failure in the CI. It turns out that the test_misc module gather GUC names using the :alpha: character class which only allows alphabetic whereas GUC names can have digits in them. The 0001 patch fixes this by instead using the :alnum: character class which allows all alphanumeric characters. This is not directly related to this patch, it just happened to be exposed by it.
-- Daniel Gustafsson
v7-0001-Handle-alphanumeric-characters-in-matching-GUC-na.patch
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v7-0002-Raise-the-minimum-supported-OpenSSL-version-to-1..patch
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v7-0003-Support-configuring-multiple-ECDH-curves.patch
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v7-0004-Support-configuring-TLSv1.3-cipher-suites.patch
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